1. Introduction
This manual provides detailed instructions for the proper use and interpretation of the Wondfo Pregnancy Test Strips, Model WF-W1. These tests are designed for the rapid detection of human chorionic gonadotropin (hCG) in urine, indicating pregnancy. Please read all instructions carefully before performing the test to ensure accurate results.
2. Safety Information
- For in vitro diagnostic use only. Do not ingest.
- Do not use the test strip after the expiration date printed on the foil pouch.
- Store at room temperature (4-30°C or 39-86°F) in the sealed pouch until use. Do not freeze.
- Keep out of reach of children.
- Each test strip is for single use only. Discard after first use.
- Do not use if the foil pouch is damaged or opened.
- Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
3. Product Overview
The Wondfo Pregnancy Test Strip is a rapid, qualitative immunoassay for the detection of hCG in urine. It is designed for early detection of pregnancy, with sensitivity to hCG levels as low as 25 mIU/ml. Each test is individually sealed for hygiene and convenience.
Contents:
- Individually packaged Wondfo Pregnancy Test Strips (25 count).
- Instruction leaflet.

Image: Wondfo Pregnancy Test Strips, individually wrapped for sanitary and discreet use.

Image: Packaging for Wondfo Pregnancy Test Strips, showing a box containing multiple individually wrapped strips.
4. Setup
- Collect a urine sample in a clean, dry container. First morning urine is recommended as it typically contains the highest concentration of hCG.
- Remove the test strip from its sealed foil pouch just prior to testing.
- Ensure the test strip and urine sample are at room temperature before use.

Image: A hand holding a Wondfo Pregnancy Test Strip, ready to be dipped into a collected urine sample in a cup.
5. Operating Instructions
- Immerse the strip into the urine sample with the arrow pointing towards the urine.
- Do not immerse past the MAX line.
- Take the strip out after 5-10 seconds.
- Lay the strip flat on a clean, dry, non-absorbent surface.
- Wait for the colored lines to appear. Read the result in 3-5 minutes. Do not read results after 5 minutes, as this may lead to inaccurate readings (e.g., evaporation lines).

Image: A visual guide illustrating the three simple steps for using the Wondfo Pregnancy Test Strip: dipping the strip, waiting for the reaction, and reading the result.
Video: A short preview demonstrating the quick and reliable use of Wondfo Pregnancy Test Strips, highlighting their accuracy and clear results.
6. Interpreting Results
The appearance of colored lines in the test window indicates the result. Always read results within the 3-5 minute timeframe.
Positive Result (Pregnant):
Two distinct colored lines appear. One line should be in the Control (C) region and another line in the Test (T) region. The intensity of the T line may vary depending on the concentration of hCG in the urine.
Negative Result (Not Pregnant):
Only one colored line appears in the Control (C) region. No apparent colored line appears in the Test (T) region.
Invalid Result:
No colored line appears in the Control (C) region, or only a line appears in the Test (T) region. This indicates insufficient sample volume or incorrect procedural techniques. Review the instructions and repeat the test with a new strip.

Image: A Wondfo Pregnancy Test Strip displaying a clear positive result with two distinct lines, one in the control region and one in the test region.

Image: A Wondfo Pregnancy Test Strip displaying a negative result with only one line visible in the control region.
Video: A user demonstrating the Wondfo Pregnancy Test Strips, showing how to use them and interpret the results, including a clear positive outcome.
7. Maintenance & Storage
- Store the test strips in their original sealed pouches at room temperature (4-30°C or 39-86°F).
- Protect from moisture, heat, and direct sunlight.
- Do not store in the refrigerator or freezer.
8. Troubleshooting
No Control Line Appears:
If no control line appears, the test is invalid. This could be due to insufficient urine sample, incorrect procedure, or a damaged test strip. Discard the test and repeat with a new strip, ensuring all steps are followed correctly.
Faint Test Line:
A faint test line, even if very light, still indicates a positive result. The intensity of the line can vary with the concentration of hCG. If you are testing very early in pregnancy, the hCG levels may be low. You may wish to retest in 48-72 hours with first morning urine, as hCG levels typically double every two days in early pregnancy.
Evaporation Lines:
Evaporation lines can sometimes appear after the recommended reading time (5 minutes). These are colorless lines caused by the evaporation of urine and should not be interpreted as positive results. Always read the test within the specified timeframe.
9. Specifications
| Brand | Wondfo |
|---|---|
| Model Number | WF-W1 |
| Test Type | HCG Pregnancy Test Strip |
| Sensitivity | 25 mIU/ml |
| Sample Type | Urine |
| Result Time | 3-5 minutes |
| Product Dimensions | 0.79 x 0.79 x 0.08 inches |
| Item Weight | 0.15 Pounds |
| Number of Pieces | 25 |
| Additional Features | Disposable, Individually Sealed |
10. Support & Contact
For further assistance, questions, or concerns regarding your Wondfo Pregnancy Test Strips, please contact Wondfo customer support.
- Manufacturer: Wondfo
- Visit the official Wondfo Store on Amazon for more products and information.